Malicious PDF — malware analysis report

Static analysis result for SHA-256 9172495479692698…

MALICIOUS

PDF

46.3 KB Created: 2020-08-25 21:39:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55b6b6ecc9eabf68f1544088f7a250cb SHA-1: 9127e3876a21504caa1dafa175b080bcf8a1d064 SHA-256: 917249547969269876cbb729b16630c9bb2b3cd77d7f9e974681f8528fd03991
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to other PDF files hosted on various domains. One of these links directs to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=192+168+1234'. This suggests the document is part of a link farm designed to distribute malicious content or lead users to phishing sites. The file was generated using wkhtmltopdf, indicating it's likely a crafted document rather than a legitimate one.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=192+168+1234
    • http://files.craigheadcountyveterans.org/uploads/1/3/1/6/131606169/gisiw.pdf
    • http://files.severnaparkphysicaltherapy.com/uploads/1/3/0/8/130813108/2538103.pdf
    • http://files.easternsloperanch.com/uploads/1/3/2/6/132681404/3588728.pdf
    • http://files.cakeandhr.org/uploads/1/3/1/4/131453370/f5adbda05.pdf
    • http://fewuwibam.fitzgeraldga.org/uploads/1/3/1/4/131453109/b4f15e.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2405/files/shots_imagine_dragons_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0434/8936/2082/files/gubigodiwem.pdf
    • https://cdn.shopify.com/s/files/1/0431/1652/7770/files/14705609643.pdf
    • https://cdn.shopify.com/s/files/1/0430/1760/1181/files/44497375202.pdf
    • https://cdn.shopify.com/s/files/1/0429/1523/3959/files/bulking_workout_routine.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lajuvifubukakevo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8214/files/zotesed.pdf
    • https://cdn.shopify.com/s/files/1/0435/2717/6344/files/buwewes.pdf
    • https://cdn.shopify.com/s/files/1/0431/1692/0996/files/nixujamagam.pdf
    • https://cdn.shopify.com/s/files/1/0435/1049/7434/files/81085169242.pdf
    • https://cdn.shopify.com/s/files/1/0438/3516/2784/files/xemug.pdf
    • https://cdn.shopify.com/s/files/1/0435/8527/4024/files/togikage.pdf
    • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/69568017853.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000726b.bin
f4620146ce817ddba6d31221d499036d2368b6a9a74ee25350250d1daab2f711		 pdf-font-stream PDF embedded font (sfnt) at offset 0x726B 5008 bytes
font_01_sfnt_off00008384.bin
54228f2eb1e10b1a5caba0f1f6ed372115bdbaf0403af3cec30b0c168e547e9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8384 13172 bytes

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